Preparation and microwave dielectric properties of a new A5B4O15-type cation-deficient perovskites:: Ba4LaTiTaO15

被引：5

作者：

Fang, Liang ^{[1
,2
]}

Zhang, Guiling ^{[1
,2
]}

Hu, Changzheng ^{[1
,2
]}

Zhang, Hui ^{[1
,2
]}

机构：

[1] Guilin Univ Technol, Minist Educ, Key Lab Nonferrous Mat & New Proc Technol, Guilin 541004, Peoples R China

[2] Guilin Univ Technol, Guangxi Key Lab Adv Mat & New Preparat Technol, Guilin 541004, Peoples R China

来源：

MATERIALS LETTERS | 2008年 / 62卷 / 4-5期

基金：

中国国家自然科学基金;

关键词：

dielectrics; perovskites; electroceramics;

D O I：

10.1016/j.matlet.2007.06.030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new A(5)B(4)O(15)-type cation-deficient perovskite Ba4LaTiTaO15 was prepared by the conventional solid-state reaction route. The phase and structure of the ceramics were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM). The compound crystallizes in the hexagonal system with unit cell parameter a=5.7405(2)angstrom, c= 11.7460(6) angstrom, V=335.21(2) angstrom(3) and Z = 1. The microwave dielectric properties of the ceramic were studied using a network analyzer, and it shows a high dielectric constant of 42.3, a high quality factors with Q(u) x f of 28,790 GHz, and a small positive tau(f) of + 33.1 ppm degrees C-1 (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：670 / 672

页数：3

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